Automatic splicing mechanism for compact spinning yarns

Abstract

The invention relates to the technical field of production of compact spinning yarns, in particular to an automatic joint mechanism for compact spinning yarns, which comprises a base, a connecting chamber is arranged above the base, and traction heads are arranged at two ends of the connecting chamber; the clamping assembly is arranged in the traction head, and a cutting assembly is arranged on one side of the clamping assembly; the wiring assembly is rotationally arranged in the wiring chamber; the yarn cutting device has the beneficial effects that when yarn is broken, conveying is stopped, a fourth motor is started at the moment, the fourth motor drives a second adjusting ring to rotate through a second transmission gear, then multiple sets of clamping blocks get close to one another to clamp the yarn, meanwhile, a cutting knife is driven to cut off the yarn, and after cutting is completed, a first motor is started; through cooperation of a double-end lead screw and a sliding block, the yarn is driven to be inserted into the interior of the yarn connecting chamber, then a cutting knife is reset, then through cooperation of a first automatic telescopic rod and a clamping assembly, the ends of the yarn are conveyed to the position between heating plates, the yarn is heated, and the ends of the yarn are fused.

Description

Technical Field

[0001] The present invention relates to the technical field of compact spinning yarn production, and specifically to an automatic joint mechanism for compact spinning yarns. Background Art

[0002] Compact spinning, also known as close spinning, is a ring spinning method in which the spun yarn has a relatively compact structure. An aggregation device is used to gradually contract the width of the sliver output by the front roller until it is close to the diameter of the formed yarn. At the same time, the twisting action of the traveller can directly reach the output nip line of the aggregation device, completely changing the situation of edge fiber loss in ring spinning and the end fibers being exposed outside the yarn to become hairiness;

[0003] During the spinning process of a spinning machine, affected by various factors, yarn breakage will inevitably occur. Therefore, yarn breakage jointing is the most common operation process in the spinning process. In the prior art, a Chinese utility model with the publication number CN105568455B discloses an automatic wire connecting device for broken wires, which includes a guide bar frame, four pairs of rollers, a twisting and connecting device, a driving roller pair, and a clamping roller pair. The yarn passes through the guide bar frame and four pairs of rollers and enters the twisting and connecting device, and then after twisting, it passes through the driving roller pair and the clamping roller pair and finally enters the winding device. When a broken wire is detected, the driving roller pair and the clamping roller pair can pull the front section of the broken wire back to facilitate the broken wire to be sucked into the twisting and connecting device and opened, and then the twisting and connecting device also sucks the rear section of the broken wire to complete the wire connecting process; the advantages of the invention are compact structure and excellent wire connecting quality;

[0004] In the above technology, the driving roller pair and the clamping roller pair can pull the front section of the broken wire back to facilitate the broken wire to be sucked into the twisting and connecting device and opened, and then the twisting and connecting device also sucks the rear section of the broken wire to complete the wire connecting process. However, when the roller pair and the clamping roller pull the broken wire back, the pulling distance cannot be controlled, resulting in the length of the broken wire being too long or too short, thus affecting the connection of the broken yarn. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic joint mechanism for compact spinning yarns to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An automatic joint mechanism for compact spinning yarns, comprising:

[0008] A base, above which a wiring chamber is provided, and traction heads are provided at both ends of the wiring chamber;

[0009] The clamping assembly is arranged inside the towing head. The clamping assembly is used to clamp the broken wire inside the towing head, and a cutting assembly is arranged on one side of the towing head corresponding to the clamping assembly.

[0010] The monitoring assembly is used to monitor whether the compact spinning yarn breaks. The monitoring assembly includes a signaler arranged on one side of the wiring chamber.

[0011] The driving assembly is used to drive the clamping assembly to move. The driving assembly includes a first motor installed on the side of the base, and the signaler is electrically connected to the first motor.

[0012] The wiring assembly is rotatably arranged inside the wiring chamber. The wiring assembly is used to connect the two ends of the broken wire clamped by the clamping assembly. The wiring assembly includes a heating plate, and the signaler is electrically connected to the heating plate.

[0013] Furthermore, two groups of symmetrically distributed first support frames are installed on the outer surface of the wiring chamber, and the bottoms of the two groups of first support frames are connected to the upper end surface of the base.

[0014] Furthermore, four groups of support plates are arranged on the upper end surface of the base, and the four groups of support plates are symmetrically distributed with the wiring chamber as the center.

[0015] Each group of support plates consists of two. The two support plates are respectively distributed on both sides of the upper end surface of the base, and a front roller pair, a driving roller pair, a middle roller pair, and a rear roller pair are respectively rotatably arranged on each support plate.

[0016] A second motor is installed at the position corresponding to the driving roller pair in one group of support plates, and the driving roller pair rotates in opposite directions through the two second motors.

[0017] Furthermore, a fixing plate is installed at the top of the side wall of the other group of support plates. A plurality of first return springs are installed at intervals on the lower end surface of the fixing plate, and the other ends of the first return springs are connected to a storage plate. The storage plate is elastically connected to the fixing plate through the plurality of first return springs.

[0018] At least one signaler is installed at the lower end of the storage plate, and a trigger plate is installed at the position corresponding to the lower end of the signaler on the side wall of the support plate.

[0019] Furthermore, two groups of symmetrically distributed sliding grooves are opened on the upper end surface of the base. A double-headed lead screw is rotatably arranged inside each sliding groove, and a first motor is arranged on the side wall of the base corresponding to the end of each double-headed lead screw. The output end of each first motor penetrates the base and is connected to the end of the corresponding double-headed lead screw.

[0020] Two sets of sliders symmetrically distributed around the wiring chamber are screwed onto each of the double-headed lead screws. A second support frame is connected to each slider, and the two traction heads are respectively connected to the upper ends of the corresponding two second support frames.

[0021] Further, top covers are provided at both ends of the wiring chamber. The top covers are in an annular structure. The diameter of the traction head is adapted to the inner diameter of the top cover, and a wire hole is opened at the central position inside the traction head;

[0022] A counterbore is opened at the central position of one end of the traction head facing the wiring chamber. The clamping assembly and the cutting assembly are both arranged inside the counterbore. The cutting assembly is fixedly arranged on one side of the opening end of the counterbore, and the clamping assembly is slidably arranged inside the counterbore.

[0023] Further, both the clamping assembly and the cutting assembly include a first adjusting ring. One of the first adjusting rings is fixed inside the counterbore, and the other first adjusting ring is slidably arranged inside the counterbore. A plurality of first automatic telescopic rods are installed between the two first adjusting rings at intervals;

[0024] Cavities are opened inside the two first adjusting rings. A second adjusting ring is rotatably arranged inside each cavity. A plurality of inclined cutting grooves are opened at intervals on the inner wall of the second adjusting ring. Through grooves adapted to the inclined cutting grooves are opened at the corresponding positions on the inner wall of the first adjusting ring. The through grooves penetrate through the first adjusting ring and communicate with the inclined cutting grooves.

[0025] Further, a clamping block is inserted into each through groove. A second limiting block is installed on the side wall of each clamping block. Second limiting grooves are opened at the corresponding positions on the inner side wall of the through groove for the second limiting blocks. The second limiting block is slidably arranged inside the second limiting groove. A second return spring is arranged between the inner side wall of the second limiting groove and the side wall of the second limiting block;

[0026] A plurality of second tooth grooves are opened on the outer surface of the second adjusting ring at circumferential intervals. A second transmission gear is rotatably arranged at the corresponding position of the second adjusting ring inside the cavity. The second transmission gear meshes with the second adjusting ring through the second tooth grooves;

[0027] A fourth motor is installed on the outer surface of the first adjusting ring at the corresponding position of the second transmission gear. The output end of the fourth motor penetrates through the first adjusting ring and is connected to the side wall of the corresponding second transmission gear.

[0028] Furthermore, the cutting assembly also includes a cutting knife connected to the corresponding clamping block.

[0029] Further, a clearance cavity is provided at the center of the inner wall of the wiring chamber, a wiring ring is rotatably provided inside the clearance cavity, and first limit blocks are provided on both side walls of the wiring ring, a first limit groove is provided on the inner side wall of the clearance cavity at a position corresponding to the first limit block, and the first limit block is rotatably provided inside the first limit groove;

[0030] The outer surface of the wiring ring is provided with an annular rack, the inside of the clearance cavity is provided with a first transmission gear meshing with each other at a position corresponding to the annular rack, and a third motor is installed at a position corresponding to the first transmission gear inside the clearance cavity, and the output end of the third motor is connected to the first transmission gear;

[0031] A plurality of groups of second automatic telescopic rods are installed on the inner wall of the wiring ring and are distributed at intervals. The output end of each of the second automatic telescopic rods is connected to a heating plate with an arc structure.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention conveys the yarn through the cooperation of the front roller pair, the driving roller pair, the middle roller pair and the rear roller pair. When the yarn breaks, the conveying stops, and the fourth motor is started at this time. The fourth motor drives the second adjusting ring to rotate through the second transmission gear, so that the multiple groups of clamping blocks are close to each other to clamp the yarn, and the cutting knife is driven to cut the yarn. After the cutting is completed, the first motor is started, and the traction head and the yarn are inserted into the wiring chamber through the cooperation of the double-headed screw rod and the slider, and then the fourth motor on the cutting assembly is started to reset the cutting knife, and then the end of the yarn is conveyed between the heating plates through the cooperation of the first automatic telescopic rod and the clamping assembly, and then the second automatic telescopic rod and the heating plate are started to heat the yarn to fuse the yarn end;

[0034] 2. When conveying yarn, the stretched yarn will press upward against the elastically arranged storage plate, thereby preventing the signal device at the bottom of the storage plate from contacting the trigger plate. When the yarn breaks, the elastically arranged storage plate is no longer limited by the yarn, driving the signal device to contact the trigger plate. At this time, the signal device is triggered, and the second motor receives the signal to stop conveying the yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0036] Figure 2 It is a schematic side view of the three-dimensional structure of the present invention;

[0037] Figure 3 is Figure 2 The enlarged schematic diagram of the structure at position A in

[0038] Figure 4 is Figure 2 The enlarged schematic diagram of the structure at position B in

[0039] Figure 5 The schematic diagram of the connection between the wiring chamber and the traction head structure of the present invention;

[0040] Figure 6 The sectional schematic diagram of the connection between the wiring chamber and the traction head structure of the present invention;

[0041] Figure 7 is Figure 6 The enlarged schematic diagram of the structure at position C in

[0042] Figure 8 is Figure 6 The enlarged schematic diagram of the structure at position D in

[0043] Figure 9 The schematic diagram of the connection between the cutting assembly and the clamping assembly of the present invention;

[0044] Figure 10 The sectional schematic diagram of the structure of the first adjusting ring of the present invention;

[0045] Figure 11 is Figure 10 The enlarged schematic diagram of the structure at position E in

[0046] Figure 12 The schematic diagram of the connection between the wiring ring and the heating plate of the present invention.

[0047] In the figure: base 1, first support frame 2, wiring chamber 3, support plate 4, front roller pair 5, drive roller pair 6, middle roller pair 7, rear roller pair 8, fixing plate 9, second support frame 10, sliding groove 11, double-headed lead screw 12, first motor 13, slider 14, first return spring 15, storage plate 16, signal device 17, trigger plate 18, second motor 20, top cover 21, traction head 22, wire hole 23, counterbore 24, first adjusting ring 25, first automatic telescopic rod 26, cutting knife 27, relief cavity 28, third motor 29, first transmission gear 30, wiring ring 31, annular rack 32, first limiting groove 33, first limiting block 34, second automatic telescopic rod 35, heating plate 36, fourth motor 37, cavity 38, second adjusting ring 39, second tooth groove 40, second transmission gear 41, inclined cutting groove 42, through groove 43, clamping block 44, second limiting groove 45, second return spring 46, second limiting block 47. Detailed implementation manners

[0048] To more clearly illustrate the overall concept of the present invention, the following will be described in detail by way of example in conjunction with the accompanying drawings of the specification.

[0049] Embodiment 1:

[0050] Please refer to Figures 1 to 12 , the present invention provides a technical solution: an automatic joint mechanism for compact spun yarn, comprising:

[0051] A base 1, above which a wiring chamber 3 is provided, and traction heads 22 are provided at both ends of the wiring chamber 3;

[0052] A clamping assembly, arranged inside the traction head 22, which is used to clamp the broken yarn inside the traction head 22, and a cutting assembly is arranged on one side of the traction head 22 corresponding to the clamping assembly;

[0053] A wiring assembly, rotatably arranged inside the wiring chamber 3, which is used to connect the two ends of the broken yarn, and the wiring assembly includes a heating plate 36;

[0054] Through the clamping assembly inside the traction head 22, the broken yarn is clamped, and then through the cutting assembly, the front end of the broken yarn is cut off. After cutting, through the cooperation of the clamping assembly, the two traction heads 22 traction the two ends of the yarn into the wiring chamber 3, and wiring is carried out through the wiring assembly inside the wiring chamber 3

[0055] Embodiment 2:

[0056] As Figure 2 and Figure 3 shown, the automatic joint mechanism for compact spun yarn disclosed in Embodiment 2 of the present invention has basically the same structure as that in Embodiment 1, and the difference lies in:

[0057] Two groups of symmetrically distributed first support frames 2 are installed on the outer surface of the wiring chamber 3, and the bottom ends of the two groups of first support frames 2 are connected to the upper end surface of the base 1;

[0058] Four groups of support plates 4 are provided on the upper end surface of the base 1, and the four groups of support plates 4 are symmetrically distributed with the wiring chamber 3 as the center;

[0059] Each group of support plates 4 consists of two, and the two support plates 4 are respectively distributed on both sides of the upper end surface of the base 1, and a front roller pair 5, a driving roller pair 6, a middle roller pair 7, and a rear roller pair 8 are respectively rotatably arranged on each support plate 4;

[0060] A second motor 20 is installed at the position corresponding to the corresponding driving roller pair 6 in one group of support plates 4, and the driving roller pair 6 rotates in opposite directions through the two second motors 20;

[0061] Through the cooperation of the front roller pair 5, the driving roller pair 6, the middle roller pair 7, and the rear roller pair 8, the yarn is guided, and then the driving roller pair 6 is driven to rotate by the second motor 20 to convey the yarn.

[0062] Embodiment 3:

[0063] As Figure 4 shown, the automatic joint mechanism of the compact spun yarn disclosed in Embodiment 3 of the present invention has basically the same structure as that in Embodiment 2, and the difference lies in:

[0064] At the top end of one side side wall of another group of support plates 4, a fixing plate 9 is installed, and a plurality of groups of first return springs 15 distributed at intervals are installed on the lower end surface of the fixing plate 9. The other ends of the first return springs 15 are connected to a placing plate 16, and the placing plate 16 is elastically connected to the fixing plate 9 through a plurality of groups of first return springs 15;

[0065] At least one group of signal devices 17 is installed at the lower end part of the placing plate 16, and a trigger plate 18 is installed at the position corresponding to the lower end part of the signal device 17 on the side wall of the support plate 4;

[0066] The signal device 17 is electrically connected to the second motor 20;

[0067] In the state of conveying the yarn, the straightened yarn will upwardly abut against the elastically arranged placing plate 16, so that the signal device 17 at the bottom of the placing plate 16 cannot contact the trigger plate 18. When the yarn breaks, the elastically arranged placing plate 16 is no longer limited by the yarn, driving the signal device 17 to contact the trigger plate 18. At this time, the signal device 17 is triggered, and the second motor 20 receives the signal and stops conveying the yarn.

[0068] Embodiment 4:

[0069] As Figure 2 and Figure 3 shown, the automatic joint mechanism of the compact spun yarn disclosed in Embodiment 4 of the present invention has basically the same structure as that in Embodiment 3, and the difference lies in:

[0070] On the upper end surface of the base 1, two groups of symmetrically distributed sliding grooves 11 are opened. Inside each sliding groove 11, a double-headed lead screw 12 is rotatably arranged, and at the end position of each double-headed lead screw 12 on the side wall of the base 1, a first motor 13 is arranged. The output end of each first motor 13 penetrates through the base 1 and is connected to the end of the corresponding double-headed lead screw 12;

[0071] On each double-headed lead screw 12, two groups of sliders 14 symmetrically distributed with the wiring chamber 3 as the center are screwed. A second support frame 10 is connected to each slider 14, and the two traction heads 22 are respectively connected to the upper end parts of the corresponding two second support frames 10;

[0072] When the yarn breaks, the first motor 13 is started. Through the cooperation of the double-headed lead screw 12 and the slider 14, the traction head 22 and the yarn inside the traction head 22 are synchronously inserted into the wiring chamber 3.

[0073] Embodiment Five:

[0074] As Figure 5 - Figure 7 and Figure 9 - Figure 11 shown, the automatic joint mechanism of the compact spinning yarn disclosed in Embodiment Five of the present invention has basically the same structure as that in Embodiment Four. The difference lies in that:

[0075] Top covers 21 are arranged at both ends of the wiring chamber 3. The top covers 21 are in an annular structure. The diameter of the traction head 22 is adapted to the inner diameter of the top cover 21, and a wire hole 23 is opened at the central position inside the traction head 22;

[0076] A counterbore 24 is opened at the central position of one end of the traction head 22 facing the wiring chamber 3. The clamping assembly and the cutting assembly are both arranged inside the counterbore 24. The cutting assembly is fixedly arranged on one side of the opening end of the counterbore 24, and the clamping assembly is slidably arranged inside the counterbore 24;

[0077] Both the clamping assembly and the cutting assembly include a first adjusting ring 25. One group of first adjusting rings 25 is fixed inside the counterbore 24, and the other group of first adjusting rings 25 is slidably arranged inside the counterbore 24. A plurality of groups of first automatic telescopic rods 26 distributed at intervals are installed between the two groups of first adjusting rings 25;

[0078] Cavities 38 are opened inside both groups of first adjusting rings 25. A second adjusting ring 39 is rotatably arranged inside each cavity 38. A plurality of groups of inclined cutting grooves 42 are opened at intervals on the inner wall of the second adjusting ring 39. Through grooves 43 adapted to the inclined cutting grooves 42 are opened at the corresponding positions on the inner wall of the first adjusting ring 25. The through grooves 43 penetrate through the first adjusting ring 25 and communicate with the inclined cutting grooves 42;

[0079] Clamping blocks 44 are inserted into each through groove 43. Second limit blocks 47 are installed on the side walls of each clamping block 44. Second limit grooves 45 are opened at the corresponding positions on the inner side walls of the through grooves 43 for the second limit blocks 47. The second limit blocks 47 are slidably arranged inside the second limit grooves 45. Second return springs 46 are arranged between the inner side walls of the second limit grooves 45 and the side walls of the second limit blocks 47;

[0080] A plurality of groups of second tooth grooves 40 are opened on the outer surface of the second adjusting ring 39 at circumferential intervals. A second transmission gear 41 is rotatably arranged inside the cavity 38 at the position corresponding to the second adjusting ring 39. The second transmission gear 41 meshes with the second adjusting ring 39 through the second tooth grooves 40;

[0081] A fourth motor 37 is installed on the outer surface of the first adjustment ring 25 at a position corresponding to the second transmission gear 41, and an output end of the fourth motor 37 passes through the first adjustment ring 25 and is connected to a side wall of the corresponding second transmission gear 41;

[0082] The cutting assembly also includes a cutting knife 27 connected to a corresponding clamping block 44;

[0083] The first motor 13, the fourth motor 37 and the first automatic telescopic rod 26 are all electrically connected to the signal device 17;

[0084] When the yarn breaks, the fourth motor 37 is started, and the fourth motor 37 drives the second adjusting ring 39 to rotate through the second transmission gear 41, so that the multiple groups of clamping blocks 44 are close to each other to clamp the yarn, and the cutting knife 27 is driven to cut the yarn.

[0085] Embodiment six:

[0086] like Figure 8 , Figures 9 to 12 As shown, the automatic jointing mechanism of the concentrated spun yarn disclosed in the sixth embodiment of the present invention has a structure that is basically the same as that in the fifth embodiment, except that:

[0087] A clearance cavity 28 is provided at the center of the inner wall of the wiring chamber 3, a wiring ring 31 is rotatably provided inside the clearance cavity 28, and first limit blocks 34 are provided on both side walls of the wiring ring 31, a first limit groove 33 is provided on the inner side wall of the clearance cavity 28 at a position corresponding to the first limit block 34, and the first limit block 34 is rotatably provided inside the first limit groove 33;

[0088] An annular rack 32 is disposed on the outer surface of the wiring ring 31, and a first transmission gear 30 meshing with each other is rotatably disposed in the clearance cavity 28 at a position corresponding to the annular rack 32, and a third motor 29 is installed in the clearance cavity 28 at a position corresponding to the first transmission gear 30, and an output end of the third motor 29 is connected to the first transmission gear 30;

[0089] The inner wall of the wiring ring 31 is installed with multiple groups of second automatic telescopic rods 35 distributed at intervals, and the output end of each second automatic telescopic rod 35 is connected to a heating plate 36 with an arc structure;

[0090] Through the cooperation of the double-headed screw rod 12 and the slider 14, the traction head 22 and the yarn are inserted into the wiring chamber 3, and then the fourth motor 37 on the cutting assembly is started to reset the cutting knife 27, and then the end of the yarn is transported between the heating plates 36 through the cooperation of the first automatic telescopic rod 26 and the clamping assembly, and then the second automatic telescopic rod 35 and the heating plate 36 are started to heat the yarn and fuse the yarn ends.

[0091] The specific solution of this scheme is as follows: Through the cooperation of the front roller pair 5, the driving roller pair 6, the middle roller pair 7, and the rear roller pair 8, the yarn is guided, and then the driving roller pair 6 is driven to rotate by the second motor 20 to convey the yarn. In the state of conveying the yarn, the straightened yarn will abut upward against the elastically arranged object placing plate 16, so that the signal device 17 at the bottom of the object placing plate 16 cannot contact the trigger plate 18. When the yarn breaks, the elastically arranged object placing plate 16 is no longer limited by the yarn, driving the signal device 17 to contact the trigger plate 18. At this time, the signal device 17 is triggered, and the second motor 20 receives the signal and stops conveying the yarn;

[0092] When the yarn breaks, the fourth motor 37 is started. The fourth motor 37 drives the second adjusting ring 39 to rotate through the second transmission gear 41, so that multiple clamping blocks 44 approach each other to clamp the yarn. At the same time, the cutting knife 27 is driven to cut the yarn. After the cutting is completed, the first motor 13 is started. Through the cooperation of the double-headed lead screw 12 and the slider 14, the traction head 22 and the yarn are driven to be inserted into the wiring chamber 3. Then the fourth motor 37 on the cutting assembly is started to reset the cutting knife 27. Then, through the cooperation of the first automatic telescopic rod 26 and the clamping assembly, the end of the yarn is conveyed between the heating plates 36. Then the second automatic telescopic rod 35 and the heating plates 36 are started to heat the yarn to fuse the ends of the yarn. Then the clamping assembly is controlled to reset, and the second motor 20 is started again to continue conveying the yarn.

[0093] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic piecing mechanism for concentrated spun yarn, characterized in that: include: A base (1), wherein a wiring chamber (3) is arranged above the base (1), and traction heads (22) are arranged at both ends of the wiring chamber (3); A clamping assembly is arranged inside the traction head (22), the clamping assembly is used to clamp the broken wire inside the traction head (22), and a cutting assembly is arranged inside the traction head (22) on a side corresponding to the clamping assembly; A monitoring component, used for monitoring whether the concentrated spun yarn is broken, the monitoring component comprising a signal device (17) arranged on one side of the wiring chamber (3); A driving assembly, used for driving the clamping assembly to move, the driving assembly comprising a first motor (13) mounted on a side of the base (1), the signal device (17) being electrically connected to the first motor (13); A wiring assembly is rotatably arranged inside the wiring chamber (3), the wiring assembly is used to connect the two ends of the broken wire clamped by the clamping assembly, the wiring assembly includes a heating plate (36), and the signal device (17) is electrically connected to the heating plate (36).

2. The automatic piecing mechanism for compacted spun yarn according to claim 1, characterized in that: Two groups of symmetrically distributed first support frames (2) are installed on the outer surface of the wiring chamber (3), and the bottom ends of the two groups of first support frames (2) are connected to the upper end surface of the base (1).

3. The automatic piecing mechanism for compacted spun yarn according to claim 1, characterized in that: Four groups of support plates (4) are arranged on the upper end surface of the base (1), and the four groups of support plates (4) are symmetrically distributed with the wiring chamber (3) as the center; Each group of the support plates (4) comprises two support plates (4), which are respectively distributed on both sides of the upper end surface of the base (1), and each support plate (4) is rotatably provided with a front roller pair (5), a driving roller pair (6), a middle roller pair (7), and a rear roller pair (8); A second motor (20) is installed at a position corresponding to the driving roller pair (6) on one group of the support plates (4), and the driving roller pair (6) rotates in opposite directions through two groups of the second motors (20).

4. The automatic piecing mechanism for compacted spun yarn according to claim 3, characterized in that: A fixing plate (9) is installed at the top of one side wall of another group of the support plates (4), and a plurality of groups of first return springs (15) are installed at the lower end surface of the fixing plate (9) and are distributed at intervals. The other end of each of the first return springs (15) is connected to a storage plate (16), and the storage plate (16) is elastically connected to the fixing plate (9) through the plurality of groups of the first return springs (15); At least one group of signal devices (17) is installed at the lower end of the storage plate (16), and a trigger plate (18) is installed on the side wall of the support plate (4) at a position corresponding to the lower end of the signal device (17).

5. The automatic piecing mechanism for compacted spun yarn according to claim 1, characterized in that: The upper end surface of the base (1) is provided with two groups of symmetrically distributed slide grooves (11), each of which has a double-headed screw rod (12) rotatably arranged inside the slide groove (11), and the side wall of the base (1) is provided with a first motor (13) at a position corresponding to the end of each double-headed screw rod (12), and the output end of each first motor (13) passes through the base (1) and is connected to the end of the corresponding double-headed screw rod (12); Each of the double-ended screw rods (12) is threadedly connected with two groups of sliders (14) symmetrically distributed around the wiring chamber (3), each of the sliders (14) is connected to a second support frame (10), and the two groups of traction heads (22) are respectively connected to the upper ends of the two corresponding groups of the second support frames (10).

6. The automatic piecing mechanism for compacted spun yarn according to claim 5, characterized in that: Both ends of the wiring chamber (3) are provided with a top cover (21), the top cover (21) is annular in structure, the diameter of the traction head (22) is matched with the inner diameter of the top cover (21), and a wiring hole (23) is opened at the inner center of the traction head (22); A countersunk hole (24) is provided at the center of one end of the traction head (22) facing the wiring chamber (3); the clamping assembly and the cutting assembly are both arranged inside the countersunk hole (24); the cutting assembly is fixedly arranged on one side of the opening end of the countersunk hole (24); and the clamping assembly is slidably arranged inside the countersunk hole (24).

7. The automatic piecing mechanism for compacted spun yarn according to claim 6, characterized in that: The clamping assembly and the cutting assembly both include first adjustment rings (25), wherein one group of the first adjustment rings (25) is fixed inside the countersunk hole (24), and another group of the first adjustment rings (25) is slidably arranged inside the countersunk hole (24), and a plurality of groups of first automatic telescopic rods (26) are installed between the two groups of the first adjustment rings (25) at intervals; The two groups of the first adjustment rings (25) are each provided with a cavity (38), and a second adjustment ring (39) is rotatably arranged inside each of the cavities (38). The inner wall of the second adjustment ring (39) is provided with a plurality of groups of spaced-apart bevel grooves (42), and the inner wall of the first adjustment ring (25) is provided with an adaptive through groove (43) at a position corresponding to each of the bevel grooves (42), and the through groove (43) passes through the first adjustment ring (25) and is in communication with the bevel groove (42).

8. The automatic piecing mechanism for compacted spun yarn according to claim 7, characterized in that: A clamping block (44) is inserted into the interior of each through slot (43), and a second limiting block (47) is installed on the side wall of each clamping block (44); a second limiting groove (45) is opened at the inner side wall of the through slot (43) at a position corresponding to each second limiting block (47); the second limiting block (47) is slidably arranged inside the second limiting groove (45), and a second return spring (46) is arranged between the inner side wall of the second limiting groove (45) and the side wall of the second limiting block (47); The outer surface of the second adjustment ring (39) is provided with a plurality of groups of second tooth grooves (40) distributed at circumferential intervals, and a second transmission gear (41) is rotatably arranged inside the cavity (38) at a position corresponding to the second adjustment ring (39), and the second transmission gear (41) is meshed with the second adjustment ring (39) through the second tooth grooves (40); A fourth motor (37) is installed on the outer surface of the first adjustment ring (25) at a position corresponding to the second transmission gear (41); an output end of the fourth motor (37) passes through the first adjustment ring (25) and is connected to a side wall corresponding to the second transmission gear (41).

9. The automatic piecing mechanism for compacted spun yarn according to claim 8, characterized in that: The cutting assembly also includes a cutting knife (27) connected to the corresponding clamping block (44).

10. The automatic piecing mechanism for compacted spun yarn according to claim 1, characterized in that: A clearance cavity (28) is provided at the center of the inner wall of the wiring chamber (3), a wiring ring (31) is rotatably provided inside the clearance cavity (28), and first limit blocks (34) are provided on both side walls of the wiring ring (31), a first limit groove (33) is provided on the inner side wall of the clearance cavity (28) at a position corresponding to the first limit block (34), and the first limit block (34) is rotatably provided inside the first limit groove (33); An annular rack (32) is disposed on the outer surface of the wiring ring (31); a first transmission gear (30) meshing with each other is rotatably disposed inside the clearance cavity (28) at a position corresponding to the annular rack (32); a third motor (29) is installed inside the clearance cavity (28) at a position corresponding to the first transmission gear (30); an output end of the third motor (29) is connected to the first transmission gear (30); The inner wall of the wiring ring (31) is provided with a plurality of groups of second automatic telescopic rods (35) which are spaced apart from each other, and the output end of each of the second automatic telescopic rods (35) is connected to a heating plate (36) with an arc structure.

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